The software will let you know how long the scan will take and if you can use your computer in the meantime. If you have a lot of files on your computer, the initial scan could take an hour or more.
To get started, check out our lists of the Best Antivirus Software for Mac of 2021 and Best Antivirus Software of 2021. Antivirus software also should be easy to use and have the features you need without breaking the bank. Look for one that detects and removes viruses, spyware, phishing emails, worms, and other threats.